Reduce phishing, impersonation, account compromise, and risky inbox activity across Microsoft 365 and Google mail environments.
ACS deploys and manages Abnormal Security for Microsoft 365 and Google mail environments, reducing phishing, impersonation, account-compromise, spam, and graymail risk while managing review and response for suspicious messages.
Identify and reduce email risk from phishing, malicious attachments and links, spam, graymail (unwanted bulk or low-value email), business email compromise (BEC), vendor fraud, and social engineering messages that target business email users.
Abnormal Security management
Support setup, tuning, message review, and ongoing management of the Abnormal Security platform.
Account compromise awareness
Evaluate alerts tied to executive impersonation, payment-change fraud, vendor fraud, supply chain compromise, internal account compromise, and suspicious mailbox activity.
Email security that connects protection to response.
Manage email security controls for Microsoft 365 and Google environments using Abnormal SecurityFocus on phishing, malware delivery attempts, ransomware lures, social engineering, impersonation, supply chain, account compromise, spam, and graymailProvide tuning, false-positive review, reporting, and practical response workflows for suspicious email activity
Your organization’s mail environment
Microsoft 365 or Google connection
Support contacts and escalation paths
Safelist rules for approved senders and domains
End-user reporting inputs
ACS managed email security
Abnormal Security setup
Suspicious-message review
Platform tuning
Response management
Policy and tuning updates for protected mailboxes
ConnectAnalyzeProtectRefine
The inbox-risk gap
01
Email remains one of the easiest ways to reach employees.
Phishing, malicious attachments, credential theft, and social engineering attempts often begin in the inbox, where one convincing message can create operational disruption.
02
Modern attacks use trust, not just bad links.
Executive impersonation, vendor fraud, invoice changes, payment-change requests, supply chain compromise, and internal account compromise can look like normal business communication. Effective review has to consider sender history, relationship context, tone, timing, and whether the request makes sense.
03
Email security needs clear response paths.
ACS connects the mail environment, aligns service contacts and safelist rules, and defines how suspicious messages, account-risk alerts, user reports, and financial-change requests are reviewed and handled.
04
Trends should improve future tuning.
False positives, false negatives, repeat themes, and reported-message patterns can inform better protection, clearer user guidance, and management with security monitoring, awareness training, MFA, or incident-response workflows as the program matures.
Key capabilities
Email security for phishing defense.
Email Security
Platform connection support
Support Microsoft 365 or Google API connection, Abnormal Security setup, user-reported phish workflows, service contacts, safelist management, and protected mailbox validation.
Email Security
Phishing and malware defense
Detect, block, remove, or triage phishing, malware delivery attempts, ransomware lures, malicious links, suspicious attachments, spam, and graymail in protected mailboxes.
Email Security
Impersonation, BEC, and fraud defense
Improve behavioral detection context for executive impersonation, vendor spoofing, business email compromise, wire-fraud lures, payment-change requests, and suspicious relationship-based messages.
Email Security
Account takeover support for protected mailboxes
Manage account-compromise workflows for protected mailboxes, such as suspicious mailbox review, internal account risk triage, remediation for high-confidence ATO events, message removal, password-reset handoffs, MFA review, and user communication.
Email Security
False-positive and false-negative review
Review user-reported misses, blocked messages, false positives, false negatives, and tuning needs so protections improve over time.
Email Security
Protected mailbox reporting
Give leaders a clearer view of protected mailboxes, user-reported phish, recurring spoofing themes, payment-fraud lures, account-risk signals, tuning priorities, and next-step actions.
Common use cases
When inbox risk becomes operational.
Phishing resilience
Strengthen defenses against credential theft, malicious links, ransomware delivery, and social engineering that targets employees.
Executive impersonation
Detect and reduce risk from messages that imitate executives, finance leaders, vendors, or trusted business relationships.
Supply chain compromise
Improve context around risky vendor communications and business email patterns that may indicate a vendor or partner mailbox has been compromised.
Mailbox hygiene and reporting
Provide ongoing tuning, reporting, safelist management, and clear communication about email security controls.
How the service works
How inbox alerts become action.
01
Confirm
Document mail platform, domains, connection path, service contacts, safelist rules, reporting needs, and protected mailboxes.
02
Connect
Set up Abnormal Security for Microsoft 365 or Google environments, then validate protected mailboxes and data flow.
03
Protect
Evaluate suspicious-message alerts, manage blocked or suspicious message handling, support account-compromise workflows, and move priority issues to the right support route.
04
Refine
Tune safelists, review missed or incorrectly blocked messages, identify recurring issues, and adjust setup as business communication changes.
Next step
Need stronger inbox protection?
ACS can deploy and manage Email Security with Abnormal Security — supporting phishing defense, account-compromise review, and practical response management for Microsoft 365 and Google mail environments.
Abnormal Security managementMicrosoft 365 / Google mail protectionPhishing and impersonation focus